ppwwyyxx / N-Body

Parallel N-Body Simulation Program

Introduction

This is a small gtk program of N-Body Simulation implemented by multi-thread / multi-process programming library.

Compile

Dependencies: openmpi

Compile:

$ ./make_all_version

This will generate 4 versions of the program: sequential, openmp, mpi, pthread

Example

$ ./omp

$ ./omp -d 0		(close display mode)

Usage

See Help on Command Line Arguments, e.g.:

$ ./omp --help
Usage:
    ./omp -b NUM [-r <switch>] [-w <switch>] [-n <NUM_OF_PROC>] [-s <SIZE>] [-t <STEP>] [-h]
Options:
    --ball=NUM,  -b      number of balls. Default: 20.
    --disp=0/1,  -d      a switch on display mode containing a big ball. Default: 1
    --wall=0/1,  -w      a switch on whether to use window border as walls. Default: 1
    --nproc=NUM, -n      number of threads(pthread only). number of CPUs by default
    --size=SIZE, -s      size of window(by pixels). Format: [width]x[height]
                         eg. 1200x800 (default)
    --step=NUM,  -t      number of loops to operate in simulation.
                         NOTE: GUI will be off to calculate time.
    --help,              -h      print help.

In GUI, use 'Space' to pause, 'ESC' to quit.